What is RS-485, RS-422 chip, RS-422/485 usb adapter driver, supply voltage

 SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8

https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-485-422/sp485ecn-l-tr-maxlinear-1799436